This might be strange one, but it's going out there anyway.
My guitarist and I have thought about building our own cabs.
Now I've looked at some Mongotone cabs, these are made from solid tone woods rather than the ply board most cabs are made of.
Has anyone any info or experience of solid cabs. My mate is up for the ply wood, this seems counter intuative to me. Well made guitars are made of solid woods, not ply, so why not cabs.
He points out resonance as a problem, I think so long as the sides are tuned to a pitch (same idea as an acoustic guitar) and I'd go with a circle of 5ths for the tuning of each panel. C, G for the sides, D, A for the top and bottom, E, B for the front and back panel. These are just an idea for the tuning of them.